Claim public schema ownership

When an Aiven for PostgreSQL® instance is created, the public schema is owned by the postgres user that is available only to Aiven for management purposes. If changes to the public schema are required, you can claim the ownership using the aiven_extras extension as the avnadmin database user.

1. Enable the aiven_extras extension:

   CREATE EXTENSION aiven_extras CASCADE;

2. Claim the public schema ownership with the dedicated claim_public_schema_ownership function:

   SELECT * FROM aiven_extras.claim_public_schema_ownership();

Now the avnadmin user owns the public schema and can modify it.